|
|
|
Registros recuperados: 31 | |
|
|
Santos, Fabíola Carvalho; Universidade Federal de Lavras; Techio, Vânia Helena; Universidade Federal de Lavras; Freitas, Aline Silva; Universidade Federal de Lavras; Castro, Evaristo Mauro de; Universidade Federal de Lavras; Davide, Lisete Chamma; Universidade Federal de Lavras; Sobrinho, Fausto Souza; Empresa Brasileira de Pesquisa Agropecuária. |
Studies on morphological plasticity are extremely important to plant breeding seeking to optimize genotype interactions with their environments. The present study evaluated 38 genotypes of Brachiaria ruziziensis cultivated during the rainy (October to March) and dry (April to September) seasons and examined variations in their anatomical characteristics. Fully expanded leaves were collected and fixed in FAA70 (formaldehyde: acetic acid: ethyl alcohol) for 72h and subsequently stored in 70% alcohol. Median sections of leaf blades were examined and evaluated according to traditional plant anatomical procedures. Genotypes 15, 27, 40, 53, and 90 demonstrated interactions with the environment in five of the anatomical characteristics evaluated; genotypes 1 and... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: 2.03.00.00-0; 2.03.02.03-7 morphological plasticity; Plant anatomy; Plant breeding; Forage Anatomia vegetal. |
Ano: 2013 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/18265 |
| |
|
| |
|
|
Melo,Evaldo Tadeu de; Pio,Rafael; Balbi,Rodrigo Vieira; Ferreira,Cassiana Alves; Mori,Fábio Akira. |
Abstract: The objective of this work was to evaluate the graft growth and the anatomical characterization of pear (Pyrus communis x P. pyrifolia) and quince (Cydonia oblonga) cultivars grafted on Pyrus calleryana and Chaenomeles sinensis rootstocks. Sprouted graft percentages at 60 days and the length and diameter of the graft sproutings at 120 days were evaluated. Stem cuttings from the grafting region were performed in transversal and longitudinal sections, and the secondary xylem was separated for tissue comparison. The pear trees showed good development on P.calleryana rootstock, and the anatomical sections showed that the vascular tissues were connected, which did not occur when the trees were grafted on C.sinensis, in which the grafts sprouted, but... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Cydonia oblonga; Pyrus communis x P. pyrifolia; Intergeneric grafting; Interspecific grafting; Plant anatomy; Vascular connection. |
Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2017001000877 |
| |
|
| |
|
| |
|
| |
|
| |
|
|
KARIA, C. T.; ANDRADE, R. P. de; CHARCHAR, M. J. D'Á.; GOMES, A. C.. |
Resumo: A introdução de populações heterogêneas e a sua caracterização é o primeiro passo para um programa de seleção e/ou melhoramento genético de plantas. A heterogeneidade permite a seleção de indivíduos superiores que podem ser diretamente liberados como cultivares ou servir como fonte de genes em programas de melhoramento genético. A flora nativa da Região é extremamente rica em leguminosas, sendo, inclusive, centro de origem de diversas espécies que poderiam ser usadas como forrageiras. Dentre as leguminosas nativas, destaca-se o gênero Stylosanthes que possui diversas espécies, amplamente, distribuídas pelo continente americano, apresentando grande variação de formas e tipos, resultante da evolução de populações submetidas às diferentes condições de... |
Tipo: Folhetos |
Palavras-chave: Stilosante; Feed legumes; Cerrado; Germoplasma; Leguminosa Forrageira; Melhoramento Genético Vegetal; Morfologia Vegetal; Variação Genética; Germplasm; Genetic variation; Plant breeding; Plant anatomy. |
Ano: 2002 |
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/567951 |
| |
|
| |
|
| |
|
|
Costa,Larissa Corrêa do Bomfim; Pinto,José Eduardo Brasil Pereira; Castro,Evaristo Mauro de; Alves,Eduardo; Bertolucci,Suzan Kelly Vilela; Rosal,Louise Ferreira. |
The objective of this work was to investigate the effects of shading on the growth and development of the medicinal plant Ocimum selloi after 90 days. Seedlings were maintained under three different light treatments, namely, full sunlight vs coloured shade treatments provided by red and blue ChromatiNet® 50% coloured netting. After 90 days of cultivation, height, stem diameter, petiole length, total leaf area (TLA), specific leaf area (SLA), leaf area ratio (LAR) and leaf weight ratio (LWR) of each plant hare measured. Microscopic examination of leaf sections were conducted in order to determine the leaf blade thicknesses, together with the size and density of the stomata, the number and area of chloroplasts, and chloroplast starch grains present in the... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Light quality and intensity; Plastic coloured netting; Plant anatomy; Leaf morphology and structure. |
Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052010000200012 |
| |
|
| |
|
| |
|
| |
|
|
PEREIRA,FABRICIO J.; CASTRO,EVARISTO M. DE; OLIVEIRA,CYNTHIA DE; PIRES,MARINÊS F.; PEREIRA,MARCIO P.; RAMOS,SILVIO J.; FAQUIN,VALDEMAR. |
This study aimed at verifying the lead tolerance of water hyacinth and at looking at consequent anatomical and physiological modifications. Water hyacinth plants were grown on nutrient solutions with five different lead concentrations: 0.00, 0.50, 1.00, 2.00 and 4.00 mg L–1 by 20 days. Photosynthesis, transpiration, stomatal conductance and the Ci/Ca rate were measured at the end of 15 days of experiment. At the end of the experiment, the anatomical modifications in the roots and leaves, and the activity of antioxidant system enzymes, were evaluated. Photosynthetic and Ci/Ca rates were both increased under all lead treatments. Leaf anatomy did not exhibit any evidence of toxicity effects, but showed modifications of the stomata and in the thickness of the... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Heavy metals; Ecophysiology; Plant anatomy; Macrophytes. |
Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652014000301423 |
| |
|
|
Teixeira, Thaiz Rodrigues; Pádua, Marlúcia Souza; Castro, Ana Hortência Fonsêca. |
A study on the leaf anatomy of Cordiera sessilis (Rubiaceae), a native medicinal shrub from Brazilian Cerrado was carried out to contribute for species identification and provide support for future biochemical studies and medicinal application. Leaves were collected, fixed and processed by usual techniques, and studied by light and electron microscopy. Quantitative analyzes of stomata and trichomes were performed. The leaves showed typical characteristics of Rubiaceae family, like hypostomatic leaves, paracytic stomata, dorsiventral mesophyll and collateral bundles. Two types of vascular patterns were identified in the petiole: in distal part, the vascular system is arranged cylindrically surrounded by sclerenchyma sheath and in proximal part, the vascular... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: 2.03.00.00-0 e 2.03.02.03-7 Marmelinho; Plant anatomy; Histochemical tests; Cerrado; Medicinal plant Botânica “Marmelinho”; Plant anatomy; Histochemical tests; Cerrado; Medicinal plant. |
Ano: 2016 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/29902 |
| |
|
| |
|
| |
|
|
Viana,Bruno Leal; Mello,Alexandre Carneiro Leão de; Guim,Adriana; Lira,Mário de Andrade; Dubeux Júnior,José Carlos Batista; Santos,Mércia Virgínia Ferreira dos; Cunha,Márcio Vieira da. |
Abstract: The objective of this work was to characterize morphologically elephant grass (Pennisetum purpureum) genotypes and to estimate their proportions of leaf blade tissues under grazing. Two tall varieties (Elephant B and IRI-381) and three short ones (Mott, Taiwan A-146 2.37, and Taiwan A-146 2.114) were evaluated under intermittent sheep grazing as to the following morphological characteristics: plant height, internode length, and leaf blade/culm ratio. Moreover, the proportions of the following leaf blade tissues were estimated: sclerenchyma, adaxial and abaxial epidermis, bulliform cells, vascular bundles, phloem, vascular sheath, xylem, and mesophyll. The short varieties were 28.6% shorter than the tall ones and showed higher leaf blade/culm... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Pennisetum purpureum; Dwarf elephant grass; Pasture management; Plant anatomy; Small ruminants. |
Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2018001101268 |
| |
|
|
Elb,Paula Maria; Melo-de-Pinna,Gladys Flávia; Menezes,Nanuza Luiza de. |
In specialized literature, reports on anatomy of miners in host plants are few in number. These agents trigger excavations, or paths, by consumption of plant inner tissues by larvae of several insects. The aim of this work was to investigate leaf miner occurrence in Commelina diffusa (a cosmopolitan plant) and Floscopa glabrata (an amphibious plant) using anatomical techniques. The place where the plants were collected is subjected to seasonal floods, consequently both the species were exposed to the same weather conditions and seasonal floods. This study showed that members of Agromyzidae and Chironomidae families, which are Diptera endophytophagous larvae types, were responsible for the tunnels. Moreover, in Commelina diffusa Agromyzidae larvae were... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Plant anatomy; Miners; Amphibious plant; Chironomidae; Agromyzidae. |
Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062010000100030 |
| |
Registros recuperados: 31 | |
|
|
|